Steam-exhaust nozzle.



P. T. HAYWARD & W. P. SANDERSON.

STEAM EXHAUST NOZZLE.

APPLICATION FILED JULY 28, 1013.

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JO/T 5124417105 SW IHH'I'U-LITHO, WASHINGTON D UNITED STATES T QFFTQE.

PETER THOMAS HAYWARD AND WILLIAM PATRICK SANDERSON, 0F COLLIE, WESTERN AUSTRALIA, AUSTRALIA.

STEAM-EXHAUST NOZZLE.

Specification of Letters Patent.

Patented July 28, 1914.

Application filed July 28, 1913. Serial No. 781,625.

To all whom it may concern Be it known that we, PETER THOMAS HAY- WARD and TILLIAM. PATRICK SANDERSQN, both subjects of the King of Great Britaln, and residing at Collie, WVestern Australia, Commonwealth of Australia, have invented certain new and useful Improvements in Steam-llxhaust Nozzles, of which the following is a specification.

This invention has been designed to provide an improved nozzle for use in connection with the now-existing steam exhaust pipes of locomotives which nozzle, by reason of its form of construction, will reduce the back or return steam pressure to a minimum with consequent gain in working elliciency and economy of fuel, the nozzle also acting, in some measure, as a spark extinguisher and arrester.

The nozzle consists of a circular, tapered or frusto-conical casing having an internal annular wall which depends to about half the depth of the outer casing. This wall is formed with steam exit ports and is encircled by a deflecting sleeve or ring that is adapted to loosely move thereon in a vertical direction, for which purpose it is forn'ied with slots and provided with stud bolts. The outer casing is adapted for operative connection to the mouth of the exhaust pipe.

The invention will be clearly understood from the accompanying drawing, in which- Figure 1 is an elevation showing the nozzle held in its working position over the exhaust pipe, the latter being shown in broken lines; Fig. 2 is a vertical section of the nozzle; Fig. 3 a side elevation, partly in section, of the sleeve; and Fig. 4 is a horizontal section on line iii-00 of Fig. 1.

In said. drawing, a is the outer casing, of a tapered or frusto-conical form and having the internal annular wall 5 depending therefrom as seen. This wall 7) is made with the exit or relief ports 0 for the escaping steam, and is encircled by the deflecting sleeve or ring (Z which is slidable vertically thereon in either direction, and is supported in working position, as shown in Fig. 2, by means of stud bolts f. The said bolts are threaded through shoulders 9 provided 011 casing a and project at their inner ends through' vertical slots e formed in sleeve (Z and then into holes formed therefor in the wall 5. To give ease of vertical movement to the said sleeve, it is made with recesses or insets (P, which afford relief and reduce frictional contact between said sleeve and the wall 7). The outer casing is equipped with forked lugs j, whereby the nozzle as a whole may be secured by bolts m to the mouth of the steam exhaust pipe a, the latter being represented in dotted lines .in Fig. 1.

The purpose of the sleeve (Z is to dellect and divert around its side and over its top a certain portion ol the escaping steam from the pipe n, whence such steam passes downward between the sleeve and the wall 7), rejoins the main body of steam, and escapes therewith, thus compressing or nozzling the same as it passes up the funnel. The sleeve has a limited vertical travel, owing to the provision of the slots 0 and bolts f, so that it is allowed to vibrate and thus prevent the passage from being steam choked. hen said sleeve falls, it exposes the ports such fall being caused by the back or re turn pressure of the steam in the funnel.

e claim q A. steam exhaust nozzle for locomotives, comprising a hollow, frusto-conical casing formed with a plurality of apertures; a vertical, annular wall arranged within the in terior of said casing and having its upper end joined to the correspomling casing end; a deflecting sleeve loosely encircling said wall for vertical movement relative thereto in either direction, and provided with a plurality of vertical slots corresponding in number to the apertures in the casing; and a plurality of inwardly projecting members having their outer ends mounted in said a pertures and their inner ends engaged with said wall, said members passing loosely through said slots to support said sleeve in place and limit its said movement.

.l n testii'nony whereof we have hereunto set our hands in presence of two subscribing witnesses.

PETER. THOMAS HAYWARD. WI hhlAllI PATRICK SANDERSON. lVitnesses R. W. GmsoN, F. 7. S'rnAssnUuo.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

